List of 490 Major News Events in History, Most Important Historical Events in 490
| Date | Event |
|---|---|
| August 11, 490 | Battle of Adda: The Goths under Theodoric the Great and his ally Alaric II defeat the forces of Odoacer on the Adda River, near Milan. |
| September 12, 490 | Battle of Marathon: The conventionally accepted date for the Battle of Marathon. The Athenians and their Plataean allies defeat the first Persian invasion force of Greece. |